digraph TopLevel {
    label = "TopLevel"
    compound = true
    fontname = Arial
    fontsize = 8
    bgcolor = lightcyan1
    node [
        color = black,
        fontname = Arial,
        fontsize = 8
    ]

    Module [
        fontcolor = black,
        shape = ellipse,
        URL = "classes/Module.html",
        color = palegoldenrod,
        style = filled,
        label = "Module"
    ]

    Configuration [
        fontcolor = black,
        shape = ellipse,
        URL = "classes/Configuration.html",
        color = palegoldenrod,
        style = filled,
        label = "Configuration"
    ]

    Singleton [
        shape = box,
        URL = "classes/Singleton.html",
        label = "Singleton"
    ]

    Singleton -> Configuration [

    ]

}